title: Multidirectional vector excision leads to better outcomes than traditional elliptical excision of facial congenital melanocytic nevus.
abstract: BACKGROUND
  The elliptical excision is the standard method of removing benign skin lesions, such as congenital melanocytic nevi. This technique allows for primary closure, with little to no dog-ear deformity, but may sacrifice normal tissue adjacent to the lesion, resulting in scars which are unnecessarily long. This study was designed to compare the predicted results of elliptical excision with those resulting from our excision technique.
  
  
  METHODS
  Eighty-two patients with congenital melanocytic nevus on the face were prospectively studied. Each lesion was examined and an optimal ellipse was designed and marked on the skin. After an incision on one side of the nevus margin, subcutaneous undermining was performed in the appropriate direction. The skin flap was pulled up and approximated along several vectors to minimize the occurrence of dog-ear deformity.
  
  
  RESULTS
  Overall, the final wound length was 21.1% shorter than that achieved by elliptical excision. Only 8.5% of the patients required dog-ear repair. There was no significant distortion of critical facial structures. All of the scars were deemed aesthetically acceptable based on their Patient and Observer Scar Assessment Scale scores.
  
  
  CONCLUSIONS
  When compared to elliptical excision, our technique appears to minimize dogear deformity and decrease the final wound length. This technique should be considered an alternative method for excision of facial nevi.
authors.affiliation: Department of Plastic and Reconstructive Surgery, Seoul National University School of Medicine, Seoul, Korea.
authors.forename: Seung Il
authors.initials: SI
authors.lastname: Oh
authors.forename: Yoon Ho
authors.initials: YH
authors.lastname: Lee
keywords: Cicatrix; Nevus; Wound closure technique